#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
ALL_TESTS="
ping_ipv4
ping_ipv6
multipath_test
ping_ipv4_blackhole
ping_ipv6_blackhole
"
NUM_NETIFS=8
source lib.sh
h1_create()
{
vrf_create "vrf-h1"
ip link set dev $h1 master vrf-h1
ip link set dev vrf-h1 up
ip link set dev $h1 up
ip address add 192.0.2.2/24 dev $h1
ip address add 2001:db8:1::2/64 dev $h1
ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
}
h1_destroy()
{
ip route del 2001:db8:2::/64 vrf vrf-h1
ip route del 198.51.100.0/24 vrf vrf-h1
ip address del 2001:db8:1::2/64 dev $h1
ip address del 192.0.2.2/24 dev $h1
ip link set dev $h1 down
vrf_destroy "vrf-h1"
}
h2_create()
{
vrf_create "vrf-h2"
ip link set dev $h2 master vrf-h2
ip link set dev vrf-h2 up
ip link set dev $h2 up
ip address add 198.51.100.2/24 dev $h2
ip address add 2001:db8:2::2/64 dev $h2
ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
}
h2_destroy()
{
ip route del 2001:db8:1::/64 vrf vrf-h2
ip route del 192.0.2.0/24 vrf vrf-h2
ip address del 2001:db8:2::2/64 dev $h2
ip address del 198.51.100.2/24 dev $h2
ip link set dev $h2 down
vrf_destroy "vrf-h2"
}
router1_create()
{
vrf_create "vrf-r1"
ip link set dev $rp11 master vrf-r1
ip link set dev $rp12 master vrf-r1
ip link set dev $rp13 master vrf-r1
ip link set dev vrf-r1 up
ip link set dev $rp11 up
ip link set dev $rp12 up
ip link set dev $rp13 up
ip address add 192.0.2.1/24 dev $rp11
ip address add 2001:db8:1::1/64 dev $rp11
ip address add 169.254.2.12/24 dev $rp12
ip address add fe80:2::12/64 dev $rp12
ip address add 169.254.3.13/24 dev $rp13
ip address add fe80:3::13/64 dev $rp13
}
router1_destroy()
{
ip route del 2001:db8:2::/64 vrf vrf-r1
ip route del 198.51.100.0/24 vrf vrf-r1
ip address del fe80:3::13/64 dev $rp13
ip address del 169.254.3.13/24 dev $rp13
ip address del fe80:2::12/64 dev $rp12
ip address del 169.254.2.12/24 dev $rp12
ip address del 2001:db8:1::1/64 dev $rp11
ip address del 192.0.2.1/24 dev $rp11
ip nexthop del id 103
ip nexthop del id 101
ip nexthop del id 102
ip nexthop del id 106
ip nexthop del id 104
ip nexthop del id 105
ip link set dev $rp13 down
ip link set dev $rp12 down
ip link set dev $rp11 down
vrf_destroy "vrf-r1"
}
router2_create()
{
vrf_create "vrf-r2"
ip link set dev $rp21 master vrf-r2
ip link set dev $rp22 master vrf-r2
ip link set dev $rp23 master vrf-r2
ip link set dev vrf-r2 up
ip link set dev $rp21 up
ip link set dev $rp22 up
ip link set dev $rp23 up
ip address add 198.51.100.1/24 dev $rp21
ip address add 2001:db8:2::1/64 dev $rp21
ip address add 169.254.2.22/24 dev $rp22
ip address add fe80:2::22/64 dev $rp22
ip address add 169.254.3.23/24 dev $rp23
ip address add fe80:3::23/64 dev $rp23
}
router2_destroy()
{
ip route del 2001:db8:1::/64 vrf vrf-r2
ip route del 192.0.2.0/24 vrf vrf-r2
ip address del fe80:3::23/64 dev $rp23
ip address del 169.254.3.23/24 dev $rp23
ip address del fe80:2::22/64 dev $rp22
ip address del 169.254.2.22/24 dev $rp22
ip address del 2001:db8:2::1/64 dev $rp21
ip address del 198.51.100.1/24 dev $rp21
ip nexthop del id 201
ip nexthop del id 202
ip nexthop del id 204
ip nexthop del id 205
ip link set dev $rp23 down
ip link set dev $rp22 down
ip link set dev $rp21 down
vrf_destroy "vrf-r2"
}
routing_nh_obj()
{
ip nexthop add id 101 via 169.254.2.22 dev $rp12
ip nexthop add id 102 via 169.254.3.23 dev $rp13
ip nexthop add id 103 group 101/102
ip route add 198.51.100.0/24 vrf vrf-r1 nhid 103
ip nexthop add id 104 via fe80:2::22 dev $rp12
ip nexthop add id 105 via fe80:3::23 dev $rp13
ip nexthop add id 106 group 104/105
ip route add 2001:db8:2::/64 vrf vrf-r1 nhid 106
ip nexthop add id 201 via 169.254.2.12 dev $rp22
ip nexthop add id 202 via 169.254.3.13 dev $rp23
ip nexthop add id 203 group 201/202
ip route add 192.0.2.0/24 vrf vrf-r2 nhid 203
ip nexthop add id 204 via fe80:2::12 dev $rp22
ip nexthop add id 205 via fe80:3::13 dev $rp23
ip nexthop add id 206 group 204/205
ip route add 2001:db8:1::/64 vrf vrf-r2 nhid 206
}
multipath4_test()
{
local desc="$1"
local weight_rp12=$2
local weight_rp13=$3
local t0_rp12 t0_rp13 t1_rp12 t1_rp13
local packets_rp12 packets_rp13
# Transmit multiple flows from h1 to h2 and make sure they are
# distributed between both multipath links (rp12 and rp13)
# according to the configured weights.
sysctl_set net.ipv4.fib_multipath_hash_policy 1
ip nexthop replace id 103 group 101,$weight_rp12/102,$weight_rp13
t0_rp12=$(link_stats_tx_packets_get $rp12)
t0_rp13=$(link_stats_tx_packets_get $rp13)
ip vrf exec vrf-h1 $MZ $h1 -q -p 64 -A 192.0.2.2 -B 198.51.100.2 \
-d 1msec -t udp "sp=1024,dp=0-32768"
t1_rp12=$(link_stats_tx_packets_get $rp12)
t1_rp13=$(link_stats_tx_packets_get $rp13)
let "packets_rp12 = $t1_rp12 - $t0_rp12"
let "packets_rp13 = $t1_rp13 - $t0_rp13"
multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
# Restore settings.
ip nexthop replace id 103 group 101/102
sysctl_restore net.ipv4.fib_multipath_hash_policy
}
multipath6_l4_test()
{
local desc="$1"
local weight_rp12=$2
local weight_rp13=$3
local t0_rp12 t0_rp13 t1_rp12 t1_rp13
local packets_rp12 packets_rp13
# Transmit multiple flows from h1 to h2 and make sure they are
# distributed between both multipath links (rp12 and rp13)
# according to the configured weights.
sysctl_set net.ipv6.fib_multipath_hash_policy 1
ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13
t0_rp12=$(link_stats_tx_packets_get $rp12)
t0_rp13=$(link_stats_tx_packets_get $rp13)
$MZ $h1 -6 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=1024,dp=0-32768"
t1_rp12=$(link_stats_tx_packets_get $rp12)
t1_rp13=$(link_stats_tx_packets_get $rp13)
let "packets_rp12 = $t1_rp12 - $t0_rp12"
let "packets_rp13 = $t1_rp13 - $t0_rp13"
multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
ip nexthop replace id 106 group 104/105
sysctl_restore net.ipv6.fib_multipath_hash_policy
}
multipath6_test()
{
local desc="$1"
local weight_rp12=$2
local weight_rp13=$3
local t0_rp12 t0_rp13 t1_rp12 t1_rp13
local packets_rp12 packets_rp13
ip nexthop replace id 106 group 104,$weight_rp12/105,$weight_rp13
t0_rp12=$(link_stats_tx_packets_get $rp12)
t0_rp13=$(link_stats_tx_packets_get $rp13)
# Generate 16384 echo requests, each with a random flow label.
for _ in $(seq 1 16384); do
ip vrf exec vrf-h1 $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1
done
t1_rp12=$(link_stats_tx_packets_get $rp12)
t1_rp13=$(link_stats_tx_packets_get $rp13)
let "packets_rp12 = $t1_rp12 - $t0_rp12"
let "packets_rp13 = $t1_rp13 - $t0_rp13"
multipath_eval "$desc" $weight_rp12 $weight_rp13 $packets_rp12 $packets_rp13
ip nexthop replace id 106 group 104/105
}
multipath_test()
{
log_info "Running IPv4 multipath tests"
multipath4_test "ECMP" 1 1
multipath4_test "Weighted MP 2:1" 2 1
multipath4_test "Weighted MP 11:45" 11 45
log_info "Running IPv4 multipath tests with IPv6 link-local nexthops"
ip nexthop replace id 101 via fe80:2::22 dev $rp12
ip nexthop replace id 102 via fe80:3::23 dev $rp13
multipath4_test "ECMP" 1 1
multipath4_test "Weighted MP 2:1" 2 1
multipath4_test "Weighted MP 11:45" 11 45
ip nexthop replace id 102 via 169.254.3.23 dev $rp13
ip nexthop replace id 101 via 169.254.2.22 dev $rp12
log_info "Running IPv6 multipath tests"
multipath6_test "ECMP" 1 1
multipath6_test "Weighted MP 2:1" 2 1
multipath6_test "Weighted MP 11:45" 11 45
log_info "Running IPv6 L4 hash multipath tests"
multipath6_l4_test "ECMP" 1 1
multipath6_l4_test "Weighted MP 2:1" 2 1
multipath6_l4_test "Weighted MP 11:45" 11 45
}
ping_ipv4_blackhole()
{
RET=0
ip nexthop add id 1001 blackhole
ip nexthop add id 1002 group 1001
ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1001
ping_do $h1 198.51.100.2
check_fail $? "ping did not fail when using a blackhole nexthop"
ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 1002
ping_do $h1 198.51.100.2
check_fail $? "ping did not fail when using a blackhole nexthop group"
ip route replace 198.51.100.0/24 vrf vrf-r1 nhid 103
ping_do $h1 198.51.100.2
check_err $? "ping failed with a valid nexthop"
log_test "IPv4 blackhole ping"
ip nexthop del id 1002
ip nexthop del id 1001
}
ping_ipv6_blackhole()
{
RET=0
ip -6 nexthop add id 1001 blackhole
ip nexthop add id 1002 group 1001
ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1001
ping6_do $h1 2001:db8:2::2
check_fail $? "ping did not fail when using a blackhole nexthop"
ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 1002
ping6_do $h1 2001:db8:2::2
check_fail $? "ping did not fail when using a blackhole nexthop group"
ip route replace 2001:db8:2::/64 vrf vrf-r1 nhid 106
ping6_do $h1 2001:db8:2::2
check_err $? "ping failed with a valid nexthop"
log_test "IPv6 blackhole ping"
ip nexthop del id 1002
ip -6 nexthop del id 1001
}
setup_prepare()
{
h1=${NETIFS[p1]}
rp11=${NETIFS[p2]}
rp12=${NETIFS[p3]}
rp22=${NETIFS[p4]}
rp13=${NETIFS[p5]}
rp23=${NETIFS[p6]}
rp21=${NETIFS[p7]}
h2=${NETIFS[p8]}
vrf_prepare
h1_create
h2_create
router1_create
router2_create
forwarding_enable
}
cleanup()
{
pre_cleanup
forwarding_restore
router2_destroy
router1_destroy
h2_destroy
h1_destroy
vrf_cleanup
}
ping_ipv4()
{
ping_test $h1 198.51.100.2
}
ping_ipv6()
{
ping6_test $h1 2001:db8:2::2
}
ip nexthop ls >/dev/null 2>&1
if [ $? -ne 0 ]; then
echo "Nexthop objects not supported; skipping tests"
exit $ksft_skip
fi
trap cleanup EXIT
setup_prepare
setup_wait
routing_nh_obj
tests_run
exit $EXIT_STATUS